What Phantom 3 is this video from?? I was under the impression that none of the Phantom3's have a microphone.
Where in that video are you losing signal?
Are you sure that that screen recording app is not interfering with your video preview?
I've had a similar video drop-out problem. For me, it **seems** to be worse when the bird is very close to the remote, and much less frequent when it's flying at a distance. Is this the same for you, or does the video look like this at all distances?